Continuation In - User Uploaded File - Change Name of it

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The Continuation In filing makes the user uploaded a document for review by staff. **These uploaded documents are not visible to other end-users.** This is visible in the system with whatever file name it had on the users computer.

**Request -**
- [ ] display this as something like "User uploaded file" or similar.

Rationale:
- This has caused some confusion during UAT
- Perceived risk of user filename having "naughty words" in the name, or confidential information in the name

This affects both the Filing History entry and the Staff Review screen:

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Locate the Continuation In Filing History and Staff Review screens in the JavaScript/Vue application and inspect where the uploaded filename is displayed. Verify the current filename behavior, then update both locations to show a generic label such as "User uploaded file" and confirm the label appears in each screen.

Written by the indexing model from the issue text.